Splitting-source model for the statistics of irradiance scintillations
- 1 January 1988
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America A
- Vol. 5 (1) , 126-131
- https://doi.org/10.1364/josaa.5.000126
Abstract
A novel model describing the probability-density function (PDF) of the irradiance fluctuations in a turbulent atmosphere is presented. The change in the PDF as turbulence strength increases is explained by postulating that the reduction of the transverse coherence leads effectively to splitting of the source to a number of secondary sources. Consequently, the observer detects a number of independent light sources simultaneously. The statistics of this superposition are different from those of a single source. An exact calculation based on this stipulation leads to a PDF that is practically log normal at low-level turbulence, transforms continuously, and converges to the exponential distribution at very strong turbulence. The plots of PDF moments fit between the log-normal and the K-PDF plots.Keywords
This publication has 14 references indexed in Scilit:
- Weak-scatterer generalization of the K-density function with application to laser scattering in atmospheric turbulenceJournal of the Optical Society of America A, 1986
- I–K distribution as a universal propagation model of laser beams in atmospheric turbulenceJournal of the Optical Society of America A, 1985
- Universal statistical model for irradiance fluctuations in a turbulent mediumJournal of the Optical Society of America, 1982
- Theoretical analysis of the high-order irradiance moments of light waves observed in turbulent airJournal of the Optical Society of America, 1982
- Measured statistics of laser-light scattering in atmospheric turbulenceJournal of the Optical Society of America, 1981
- Statistics of stellar scintillationJournal of the Optical Society of America, 1980
- Probability distribution of turbulent irradiance in a saturation regimeApplied Optics, 1979
- Path integrals for waves in random mediaJournal of Mathematical Physics, 1979
- K distributions in atmospheric propagation of laser lightJournal of the Optical Society of America, 1979
- Electromagnetic beam propagation in turbulent mediaProceedings of the IEEE, 1975